*{
    padding: 0;
    margin: 0;
}
html,
body {
  background: url("bgi.jpg") no-repeat center center fixed;width: 100%;
  opacity: 0.9;
}

a {
    text-decoration: none;
  }
.nav1{
    margin-left: 307px;
    width: 1241px;
    font-size: 28px;
    background-color: cyan;
    opacity: 0.9;
    z-index: 5;
    position: relative;
  }
  .nav1 ul{
    width: 600px;
    height: 50px;
    padding: 0 ;
  }
  .nav1 ul li{
   float: left;
    list-style: none;
    text-align: center;
    width: 120px;
    height: 50px;
    padding: auto;
    position: relative;
  }
  .nav1 ul li a{
    padding: auto;
  }
  .nav1 ul li:hover ul{
    display: block;
    color: tomato;
  }
  .nav1 ul li ul{
    font-size: 25px;
    width: 120px;
    height: 80px;
    display: none;
    opacity: 0.9;
    padding: 0 ;
    position: absolute;
   
  }
  .nav1 ul li ul li{
    padding: auto;
    list-style: none;
    width: 120px;
    height: 80px;
    z-index: 100;
    background-color: rgba(61, 144, 221, 0.986);
    }
  .nav1 ul li ul li:hover{
        background-color: chocolate;
    }
.sections .bao {
    width: 1241.08px;
    height: 2400px;
    background: #fff;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
}
.sections .bao .gao {
    width: 1200px;
    height:2300px;
    margin: 30px 0;
    box-shadow: 0 0 4px #ddd;
    border-bottom: 2px solid #ddd;
    background: #fff;
  }
  .sections .bao .gao h2 {
  width: 1100px;
  font-size: 2em;
  font-weight: 700;
  font-family: 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.4em;
  text-transform: none;
  padding: 0.3em 0;
  border-bottom: 4px solid #5ca05f;
  margin: 10px auto;
  text-align: center;
}
.sections .bao .gao h3{
        width: 970px;
        font-size: 1.7em;
        font-weight: 700;
        font-family: 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
        line-height: 1.4em;
        text-transform: none;
        padding: 0.3em 0;
        border-bottom: 2px solid #5ca09a;
        margin: 10px auto;
}
.sections .bao .gao h2 a {
  color: #333;
}
.sections .bao .gao .entry {
  width: 970px;
  line-height: 2em;
  margin: 0.5em 0;
  margin: 0 auto;
}
.sections .bao .gao .entry p {
  display: block;
  margin-block-start: 1em;
  margin-block-end: 1em;
  margin-inline-start: 0px;
  margin-inline-end: 0px;
  color: #333;
  font-size: 1.5em;
}  